Narset's Reversal, Storm-Kiln Artist, and Swarm Intelligence

Prerequisites

• Narset's Reversal in hand
• Storm-Kiln Artist on the battlefield
• Swarm Intelligence on the battlefield
• You have another instant and/or sorcery card in hand that can be cast using four or less colored mana
• You have enough mana to cast the additional instant or sorcery

Steps

1. Cast any other instant or sorcery spell by paying its mana cost
2. Swarm Intelligence and Storm-Kiln Artist trigger
3. Resolve the Storm-Kiln Artist trigger, creating a Treasure artifact token
4. Resolve the Swarm Intelligence trigger, copying the spell
5. Storm-Kiln Artist triggers, creating a Treasure artifact token
6. Resolve the copy of the instant or sorcery
7. Holding priority, activate the Treasures by tapping and sacrificing them, adding
8. Cast Narset's Reversal by paying , targeting the spell cast in step 1
9. Swarm Intelligence and Storm-Kiln Artist trigger
10. Resolve the Storm-Kiln Artist trigger, creating a Treasure artifact token
11. Resolve the Swarm Intelligence trigger, copying Narset's Reversal, with the copy targeting the original Narset's Reversal
12. Storm-Kiln Artist triggers, creating a Treasure artifact token
13. Resolve the copy of Narset's Reversal, copying Narset's Reversal with the copy targeting the spell cast in step 1, and then returning the original Narset's Reversal to your hand
14. Storm-Kiln Artist triggers, creating a Treasure artifact token
15. Resolve the Narset's Reversal copy, copying the spell it is targeting and returning the original spell to your hand
16. Storm-Kiln Artist triggers, creating a Treasure artifact token
17. Resolve the copy of the spell
18. Activate any number of Treasures by tapping and sacrificing them, adding enough mana to cast the additional instant or sorcery
19. Repeat
20. If the additional spell can be cast for less than four mana, this combo nets infinite mana, which may be used to repeat this combo targeting any other instant and/or sorcery card in your hand and/or on the stack

Results

• Infinite colored mana
• Infinite copies of any instants and/or sorceries on the stack
• Infinitely powerful Storm-Kiln Artist
• Infinite magecraft triggers
• Infinite storm count
• Infinite Treasure tokens